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題名 | 高溫環境下飼糧中添加抗壞血酸對產蛋雞產蛋性能、蛋殼品質及免疫反應之影響=Effects of Dietary Ascorbic Acid Supplementation on the Laying Performances, Egg Shell Quality and Immune Response of Laying Hens under High Ambient Temperature |
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作者 | 林炳宏; 盧金鎮; 許振忠; | 書刊名 | 畜產研究 |
卷期 | 31:1 1998.03[民87.03] |
頁次 | 頁101-114 |
分類號 | 437.714 |
關鍵詞 | 蛋雞; 抗壞血酸; 溫度; 產蛋性能; 蛋殼品質; 免疫反應; Laying hen; Ascorbic acid; Temperature; Laying performance; Egg shell quality; Immune response; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗之目的在探討臺灣熱季(8月至9月)高溫環境下,飼糧中添加抗壞血酸對產 蛋雞產蛋性能、蛋殼品質及免疫反應之影響。 26週齡來航產蛋雞120隻,逢機分置於五個抗壞血酸添加量0、250、500、1000及2000ppm 的飼糧處理中,每處理3重複,每重複8隻產蛋雞,試驗為期6週。試驗進行第8天時,雞隻 由翼下靜脈注射綿羊紅血球抗原及肌肉注射新城雞瘟不活化疫苗,第22天時再補強注射等量 之綿羊紅血球。於試驗前及抗原注射後每週由翼下靜脈進行採血,以測定抗體力價。試驗結 束前3天由肉髯部注射植物凝集素(PHA),注射後6、12、18、24及48小時測定皮膚腫脹程 度。測定項目包括蛋雞產蛋性能、蛋殼品質及對免疫之反應。 結果顯示,飼糧中添加抗壞血酸有顯著提高蛋雞之產蛋率(P<0.05),蛋重以添加1000ppm 組最高(P<0.05),飼料採食量及飼料轉換率差異不顯著(P>0.05),試驗期間各組雞隻均有失 重, 但無顯著差異(P>0.05)。蛋殼品質方面,抗壞血酸添加到250 ppm時蛋殼強度最佳(P<0.05), 添加到500ppm時蛋殼厚度最高(P<0.05),蛋殼重則以添加1000ppm組最大(P<0.05),至於蛋 殼重/蛋重之此率,各組間差異不顯著(P>0.05)。免疫反應方面,抗壞血酸添加到1000ppm時, 有提高蛋雞對綿羊紅血球抗體力價產生之趨勢,添加到2000 ppm時抗體力價則降低。抗壞血 酸添加亦有提高對新城雞瘟病毒免疫抗體力價之產生,以接種後14天,添加1000 ppm組抗 體力價最高(P<0.05)。注射PHA後之皮膚腫脹反應,添加抗壞血酸各組皮膚腫脹程度較未添 加者為高,注射PHA後12小時,各組腫脹程度達到高峰,隨後則漸消失。 |
英文摘要 | This study was designed to investigate the effects of different levels of dietary ascorbic acid (AA) supplementation on laying performances, egg shell quality and immune response of laying hens under high ambient temperature during the hot season (from August to September) in Taiwan. A total of 120 Leghorn hens (26 wks old) were randomly assigned to 5 treatments, which were basal diet supplemented with 0, 250, 500, 1000, and 2000 ppm AA, respectively. Each treatment had three replicates with eight laying hens. Feed and water were fed ad libitum. The study lasted for 6 weeks. On the 8th day of this experiment, the layers were injected intravenously with 0.25% sheep erythrocytes antigen and intramuscularly with inactivate Newcastle disease virus vaccine. Then on the 22th day, boost injection with the same amount of sheep erythrocytes was done again. Blood samples of laying hens were taken weekly befor the test and after the injection thereafter to measure the serum antibody titers of sheep erythrocytes and Newcastle disease (ND) virus. The laying hens received a dose of phytohemagglutinin (75μg PHA) subcutaneously on the wattle on the last third day and then the sizes of swelling of each injection site were measured 6, 12, 18, 24 and 48 hrs after injection. The measurement items consisted of laying performances, egg shell quality and immune response. The results indicated that dietary AA supplement significantly increased egg production (P< 0.05) and the supplement of 1000 ppm had the highest egg weight (P< 0.05). However, the feed intake and feed conversion were not significantly different. During the experiment period, the hens lost body weights, but it was not significantly different (P> 0.05). As to the effects on egg shell quality, basal diet supplemented with 250 ppm AA had the best egg shell strength (P< 0.05), those with 500 ppm AA, the highest egg shell thickness (P< 0.05) and those with 1000 ppm AA, the largest egg shell weight (PK 0.05). The rate of egg shell weight to egg weight was not significantly different (P> 0.05) among treatments. About the effects on immune response, the addition of 1000 ppm AA to the basal diet increased the antibody titers of hemagglutination for SRBC response, but the addition of 2000 ppm AA decressed the antibody titers. The addition of AA to the basal diet also increased antibody titers of hemagglutination inhibition for ND vaccination response. The addition of AA 1000 ppm had the hightest antibody titers (P< 0.05) on the 14th day after the immunization. As to the skin swelling response, when hens were injected with PEA, the treatment groups (AA added) had higher size of swelling than the controll group. The skin swelling response of all treatment groups reached a peak at 12 hours after PHA injection, and thereafter the skin swelling degraded. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。